They can read upwards of 9v usually, but that peak/ freshly charged voltage will soon drop back down to nearer nominal voltage- dont be too concerned about nimhs or nicads reading higher than rated.

07-18-2012, 12:58 AM

Lyndon5.7

Why do the Nimh read higher than their rated voltage?

07-18-2012, 12:22 PM

deerhurst

Lipo do the same. There is the nominal voltage or resting voltage then there is the charged voltage.

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07-18-2012, 01:56 PM

upbasher

Nimh 7 cell will usually read about 9.6v when they are fully charged.
Lipos do the same thing.

07-20-2012, 12:57 PM

ksb51rl

Here's a graph of a normal NiMH pack charge showing volts per cell.
[URL=http://i152.photobucket.com/albums/s181/ksb51rl/PL6/cell-volt.jpg][IMG]http://i152.photobucket.com/albums/s181/ksb51rl/PL6/th_cell-volt.jpg[/IMG][/URL]
The drop occurred when the charger switched to trickle. Still, end voltage was over 1.4 volts per cell. If you aren't [U]ending[/U] at 1.4V/c minimum, your cells are weak or damaged IMO.